Improvement in steam-generators



UNITED STATES PATENT OFFICE.

VILLIAM B.. TAYLOR AND JAMES F. SLOAT, OF BROOKLYN, E. D., NEW YORK.

IMPROVEMENT IN STEAM-GENERATORS.

Specification forming part of Letters Patent No. 80,431, dated July 28,1868.

To all 'whom it may concern:

Be it known that we, WILLIAM It. TAYLOR and JAMES F. SLOAT, of the cityof Brooklyn, E. D., in the county of Kings and State of New York, haveinvented a certain new and Improved Steam -Boiler; and we do herebydeclare the following to be a full, clear, and exact description of thesaine, reference being had to the annexed drawing, making part of thisspecicat-ion, in which- Figurel is a vertical section taken on the lineB B of Fig. 2, and Fig. 2 is a horizontal section taken on the line A Aof Fig. l.

This invention appertains to the Vertical tubular variety ofsteam-boiler; and it consists of a novel arrangement of the tubes andtubeheads in relation to the lire-box and t0 each other, by which we areenabled to secure the advantages of an ascending and descending ue andsuperheater all within the compass of a simple cylindrical shell, whileat the saine time we retain the strength incidental to that form ofboiler.

The following description of our invention will enable any one skilledin the arts to which it appertains to make and use the same.

Similar letters of reference represent corresponding part-s of thedifferent figures in the drawing above alluded to.

The lire-box or furnace of the boiler is represented by C, and directlyover it the lower head, D, of the ascending tubes Gr is arranged, theupper head of these tubes being represented by E, which is also the headof the descending tubes H, the lower head whereof is made in the form ofa crescent, as shown by H', Fig. 2, and forms the water-bottom of theboiler.

The steam-drum of the boiler is represented by E, and thesuperheating-chamber by I, the. upper end of which is closed by a cap,J.

The operation of this boiler is as followsthatis to say: The product ofcombustion rises up, in, and through the tubes Gr to thesuperheating-chamber, where it is arrested, and returned down throughthe tubes H into the flue L, and thence escapes in the chimney K.

In this style of boiler the steam and superheating space and surfacecomprise the whole of the space above the water-level, and of coursevary in extent as the water rises or falls.

In the workmanship of the boiler there is nothing new. The tube-headsare made and the tubes put in and secured in the usual way; and so,also, is the shell of the boiler put together and inclosed over thetubes in the ordinary manner; but the invention consists in making theupward and downward flue by the arrangement 0f the tubes in relation toeach other, the furnace, tube-heads, and chimney, leaving thesuperheatingchamber above, in the manner shown and described.

Having now fully described our invention, we claim and desire to secureby Letters Patent- Making a vertical tubular steam-boiler, substantially as described, and with the tubes,

water-spaces, steam-drum, and superheater arranged therein in relationto each other as set forth.

WILLIAM R. TAYLOR. JAMES F. SLOAT. Witnesses:

AMos BROADNAX, EDWARD P. FLINT.

